Window-regulator bearing



ug. 5f; 1924. 1,503,470 A. BIR ET m.

WINDOW REGLATOR BEARING Filed Aug. I27. 1923 351g MWA/0 y awww Patented Aug. y5, 1924.

A UNITED STATES ALBERT BIR AND ERNEST E. I-IEINTZ,V O'F DETROIT, MICHTGAN.

WINDOW-REGULATOR BEARING.

Application led `August 27, 1923.' Serial No. 659,491.

To all 'whom it may concern Be it known that ALBERr Bnz A and ERNEST E. HEINTZ, citizens of the United States, residing at Detroit, in the county of Wayne and State of 'Michigam have invented certain new and useful Improvements in Window-Regulator Bearings, of which the following is a specification.

This invention relates to bearings for window regulators, and has for its object a special form of window regulator bearing for mounting the upper drumor sprocket on the window regulator plate. This bearing also acts as an adjustable anchor for one end of the counter-balancing spring.

Another feature of the invention is' the pressing inof the upper plate ofthe regulator to sink the lock nut at the end of the bearingA stud below the level of the trimming that goes over the lock board.

In the drawings:

Fig. 1 is an elevation of thetop part of a windowregulator equipped with our improved bearing. Y l

Fig. 2 is a section taken on the line 2 2 of Fig. l. j

Fig.A 3 is a section taken on the line S of Fig. 2. j

,a designates the plate ofy the regulator which is ordinarily screwed to ythe lock board'of the door (when the regulator is mounted in the door); b is the spacer bar, c the clutch housing containing a coiled spring clutch d, which need not here be de- L Vscribed as it is described in the co-pending application of Ernest E. Heintz, Serial No. 583,721, and is of no importance in this application. A flexible cable e winds helically over the driving spool f and over the drum g This drum g4 will be more generically referred to asa rotatable member, for so far as the invention of the bearing is con-l cerned the drum might be a sproclretan'd the flexible cable a chain. VThis rotatable memberwill be preferably in the form of a stamping with a helical groove 7L rolled in its periphery.' Onthe inside" of the drum a boss or journal y' is provided, which has a hollow interior for a purpose presently to be described. A screw machine product or stud 7c is provided with two diameters, one al reduced diameter that is externally screwthreaded as at m, and the other an enlarged diameter which forms a journal-bearing fn, for the journal lformed by the internally projecting boss of the rotatablev member.

The rotatable member is a cup-shaped or closed end cylinder member. This gives a hollow interior to house thespiral counterbalancing spring o, one end of which anchors in the journal bearing portion of the stud, while the other end of the same is anchored to a struck-out lug in the face of the rotatable member.

The lock or jam nut` p screws onto the external threads m of the reduced portion of the stud, and when turned down firmly secures the stud tothe regulator platea. When thisnut is loosened the stud may be turned with a screw driver inserted in the screw driver slot g, for the purpose of adjusting the stress of the spring. Be it noted journal bearing4 and the cap screw sY can Vbe screwed intoy the tapped interior'ofthe stud, the head sinking intothe recess of the boss or journal which' is part of the rotatable member. Thisl cap screw is provided with a spacing shoulder n `which prevents the cap screw Ybeing screwed down so Atight as to bind the rotatable member so as not to rotate. This forms a very desirable construction fory regulators. The cap screw, nut, and the stud can. all be made on an automatic screw machine. rThe drum can be made as a stamping with a rolled-in helical groove on the ,periphery of the drum, or samecan be satisfactorily die cast.

A desirable feature of thisregulator bearing'is' that the/drum can be secured to the fax journal bearing before the springv is --put underv tortional strain. `The tortional strain Amay' then be imparted'to the spring and the lock nut turned down to maintain the parts j in this position of tortional strain.

We .are aware that it is A.not broadly new to adjust *a counter-balancingspring'of the window regulator by means of turning the t anchor of the inner end of the spring after releasing a lock nut. However,I the Vprior construction to which we refer uses a twopart sprocket wheel, and a pin and slot adjustment between the stationary wheel section on the regulator frame. `We secure all these results simply by the use of our Cil special stud. Our stud also has an additional function ot' acting as the journal bearing for the drum, a feature not found in the construction to which we allude.

What we claim is:

l. InY a window regulator bearing, the combination of a plate, a stud secured therein provided with a hollow open end torming a journal bearing, a rotatable member having a cup-lilre journal adapted to lit into the hollow of the stud, and means passing through the center ot the journal and anchored in the journal bearing `tor tying the two together tor permitting them to rotate, one in the other.

Q. In a window regulator bearing, the combination ot' a plate, a stud lo the plate having a projecting hollow open end and also provided with a central tapped hole, a rotatable member provided with a projecting journal having an opening passing therethrough, said journal fitting into the hollow of the stud which forms the journal bearing and a screw threaded into the tapped hole of the stud tor tying the journal and journal bearing together 'tor permitting the journal to rotate in the journal bearing.

3. In a window regulator bearing, the combination of a plate, a stud secured in the plate and having a projecting end which is open and hollow to form a journal bearing, a rotatable member provided with a projecting journal which is provided with a hollow recess and also with a hole therethrough, the said stud provided withA a central tapped'opening, the said journal fitting into the journal bearing, and a cap screw passed through the hole of the journalY and screwing onto the threads of the tapped opening of the stud, the head of the cap screw sunk in the recess of the journal.

t. In a window regulator bearing, the combination of a plate, a stud secured to the plate and provided with a projecting hollow end forming a journal bearing, a rotatable member provided with an inwardly projecting boss forming a journal to fit into the journal bearing, the said journal provided with a hollow interior andA also with a hole of smaller diameter forming an intervening shoulder between the walls of the hole and walls of said interior, said stud being provided with a tapped hole, and a screw provided with a spacing collar, said screw passed through the hole in the vjournal and screwed into the threads in the rturning the stud.

tapped hole in the stud, said spacing collar arranged to abut against the end ot the stud so as not to bind the shoulder of the journal.

5. In a window regulator bearing, the` the depressed or cupped portion or" the plate.

6. In a window regulator bearing, the combination of a plate provided with a depressed or cupped portion, a stud acting as a bearing secured on suoli depressed portion and having the rear or" the stud protruding through the plate into the space formed by the cup, a nut screwing onto the rear end of the stud and located within the space Yformed by the cup, and a rotatable member supported to rotate on said stud but on the bossed side of the plate.

7. In a window regulator bearing, the combination of a plate, a stud, a jam nut for securing the stud to the plate, a cupped rotatable member rotatably supported` by the stud, a Acounter-balancing spring supported by the rotatable member andanchored at its outside end to the rotatable member and at its inside end to .the stud, whereby the tortional stress ot the spring may be regulated by releasing the nutand f8. In a window regulator bearing,v the combination of a plate, a stud having a threaded portion passing through the plate and having a projecting hollow portion forming a journal bearing, a cupped rotatable member having a projecting journal arranged to litinto the journal bearing, means for tying the yjournal' and journal bearing together so that the journal will rotate in the bearing, a jam nut screwing onto the threads of the stud, for adjustably securing the same 4to the plate, and a spiral counterbalancing spring having one end anchored to the rotatable member and the other end anchored to the stud, said counter-balancing member contained within the hollow interior of the cupped rotatable member.

rIn testimony whereof they have aliiXed their signatures. v

ALBERT Brno. nnNEsr E. HEINTZ. 

